On 23 Apr 2017, at 01:33, John Clark wrote:
On Sat, Apr 22, 2017 at 7:03 PM, Quentin Anciaux
<[email protected]> wrote:
> The contradiction is in requiring computation which is a
mathematical notion,
Notions just like calculations are physical.
Physical calculations are physical. calculation is a sigma_1
arithmetical notion. It does not involve physics, nor analysis. You
can define it in the theory
((K x) y) = x
(((S x) y) z) = ((x z) (y z))
That is shown very nicely in "How to Mock a Mocking bird" by Raymond
Smullyan.
A notion is a belief or a desire but every belief or desire anyone
had ever encountered requires a brain, and every brain ever
encountered requires matter that obeys the laws of physics.
Sure, but the question is not about the need to have a physical brain
to met people with physical brain, no one doubt that, but on how to
explain such physical brain without just saying "God made it", or
"Matter made it". That makes the question more difficult: what is
Matter, and how can Matter selects the computations without putting in
the mind non-computational element?
Bruno
John K Clark
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